i had it once, i had a gig to play in boston after anchoring "squawk box" in the morning. i ended up there at 10:00 going on stage and my fingers were shaking. i could barely play because my fingers -- i never understood, if one cup of coffee is enough and it gets you going, how can you take such a concentrated amount of it? >> you remember jolt cola? >> absolutely. >> i never drank it but there was guy miles drank a six-pack of it, and ended up running around the room all the time and never wrote his paper and then stayed under his desk the rest of the time. >> monster drinks there was speculation, coca-cola was considering buying them. >> the latest advertising of five-hour thing, we've interviewed 2,300 doctors, something like that, and it doesn't quite put the physician's stamp of approval on it but it kind of has that image. >> doesn't look like a drink. it looks like medicine in some ways. worth pointing out there is no conclusive evidence on either side of it. >> the company reported it themselves. >> they did report this themselves and there's real questions as to